sandflee commented on YARN-3519:

not easy to fix, I'll think more

> registerApplicationMaster couldn't get all running containers if rm is 
> rebuilding container info while am is relaunched 
> ------------------------------------------------------------------------------------------------------------------------
>                 Key: YARN-3519
>                 URL: https://issues.apache.org/jira/browse/YARN-3519
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: sandflee
> 1, rm failes over, have recovered all app info but all container 
> 2, am relaunched and register to am
> 3, nm with container launched by am  reregister to rm
> The container in nm and corresponding NMToken could not passed to am

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